Beryllium is used in many applications (but not in the bike industry as of yet). Most notebly it is used in several golf clubs (mostly in drivers) because of it's light weight.

The biggest issue is cost. It's a very high priced metal and the fabrication costs are also very high. As noted above Beryllium is toxic. But not as severly as stated. It is listed by OSHA as a human carcinogen but only in respirable forms (you have to breath the dust or fumes in). So in order to produce any commercial products out of beryllium (or a alloy of the metal) you have to have pretty strict worker protection standards in place.

So add up the cost of the metal and the cost of production and you have a pretty hefty price tag.

Not to say that it's not feasible. Some things like frames might be something we will see in the future....but I imagine that other options will prove out to be more affordable (metal matrix, carbon matrix, ect).

Extremely toxic? After a quick search I found that about 2% of the people that were inhaling beryllium dust over a period(worked with it daily) developed CBD, a lung disease(not cancer). Most of the infected got it before it was know that it was toxic, and a effectiv "safety rules" were available.

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I can't imagine that Beryllium alloys are commercially available to normal persons and if they would be it would blast everyones pocket.

Well, there are different sources selling it, but if they are willing to sell at a low-volum order I don't know. Pricey, yes I know!

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Well, if you own a cleanroom, a breathe mask, a full body suit and are capable to seal the surface with a durable coating after the machining, the answer is yes.

I also red that CNC-machining left only big pieces, and no small airbourne particles you could inhale. And a finished product was not dangerous.(don't need a durable coating.)

Extremely toxic? After a quick search I found that about 2% of the people that were inhaling beryllium dust over a period(worked with it daily) developed CBD, a lung disease(not cancer). Most of the infected got it before it was know that it was toxic, and a effectiv "safety rules" were available.

My sources say that it's "very toxic".Can you post the link to your source?Beside inhaling you also shouldn't touch it, because it may lead to contact dermatitis.The danger for the health was the reason why Beryllium is forbidden in the Formula One since 2000.

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Well, there are different sources selling it, but if they are willing to sell at a low-volum order I don't know. Pricey, yes I know!

They might be willing, but Beryllium is a so called strategic metal and I guess you need some documents to get alloy plates.It's primarly used in the armament industry and in very small amounts for springs in clockworks.

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I also red that CNC-machining left only big pieces, and no small airbourne particles you could inhale. And a finished product was not dangerous.(don't need a durable coating.)

I wouldn't trust this. This might be correct for Al or CrMo, but I don't know if this is the same on Be.
Addtionaly I've no clue if special tools are needed to cut Be.

AFAIK Chris Hinshaw (the founder of Beyond) did clear coat his frames.
One of the reasons that his Be frames were only available for a short period was his concerns about the durability of the clear coating.
A single crash would have been enough to scratch Be particles off.

You mentioned brake rotors. How do you prevent people from inhaling particles?
Chainrings do also wear over the time.

Don't blow the toxic claim to far out of wack. First understand that everything is toxic....it just depends on the exposure level. Hell water is toxic if to much is consumed in to short of a period of time.

So to more address your issue of toxicity with Be. Here is a good link that explains the probability of chronic health effects of working directly with Be.

One thing to keep in mind is that this source is addressing the occupational exposure to Be. In other words, someone that works in a Be plant. There possibility for exposure is significantly higher than the normal consumer public.

If you had a frame made of Be, I think the real risk would be if you decided to do some grinding or welding on it. Just riding it around would be harmless. Your exposure risk is very low. I can take a piece of raw asbestos (the actual rock) and juggle it around and all day long and my exposure risk of contracting asbestosis is very low. Now if I decided to take that rock and crush it into a bunch of very fine particles then my exposure risk goes way up! If you take your Be bike and crash on it, the scratch might produce some small particle, but I would be more likely to be injured from the crash than from the risk of lung cancer.

Acutally it's not a necessarily a function of drinking to much water in to short of a time as it is diluting your body of electrolites. For example, if a during the Tour a rider only drinks water the day before (instead of a sport drink) and continues to drink lots of water during a hot stage and not eat properly, they will rob their system of electolites and can cause their system to go into shock and possibly death. That's why they drink both water and stuff like gatorade and munch down certain foods.

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